<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		 <style>
		    .container {
		      text-align: center;
		      background-color: #a08b8b;
		    }
		
		    .item{
		      margin: 0 auto;
		      width: 100px;
		      background-color: #ff266e;
		    }
		
		  </style>
	</head>
	<body>
		<div class="container">
			<div class="item">居中</div>
		</div>
	</body>
</html>
